Bandgap modification of TiO2 nanoparticles through noncompensated chromium, nitrogen co-doping for enhanced solar energy utilization

Xiaofeng Qiu, M. Parans Paranthaman, Hui Pan, Wenguang Zhu, Violeta Iancu, Harry Meyer, Wei Wang, Hanno Weitering, Gyula Eres, Baohua Gu, Zhenyu Zhang

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Bandgap modification of TiO2 has been achieved through a conceptually new non-compensated co-doping for enhanced solar energy utilization, guided by theoretical modeling and simulations. A wet chemical approach was used to prepare Cr-N co-doped TiO2 nanoparticles. XPS results show that both Cr and N have been successfully incorporated into TiO2. UV-Vis co-doped TiO2 exhibit significantly enhanced absorption compared to either N-doped TiO2 or Cr-doped TiO2. STS spectra showed that the bandgap energy was reduced to about 2.0 eV for co-doped TiO2.

Original languageEnglish
Title of host publicationAmerican Chemical Society - 238th National Meeting and Exposition, ACS 2009, Abstracts of Scientific Papers
StatePublished - 2009
Event238th National Meeting and Exposition of the American Chemical Society, ACS 2009 - Washington, DC, United States
Duration: Aug 16 2009Aug 20 2009

Publication series

NameACS National Meeting Book of Abstracts
ISSN (Print)0065-7727

Conference

Conference238th National Meeting and Exposition of the American Chemical Society, ACS 2009
Country/TerritoryUnited States
CityWashington, DC
Period08/16/0908/20/09

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